Jeri had a lot of Mark in her Mosaic/Pathway's, a childhood friend who upgraded into lover at the 11th hour before Caretaker... I say "11th Hour" but how long had Kathryn been actually engaged and was she really in any rush to set a date and would it have changed anything in how she lived her life if she had tied the knot?

It's possible hat he was just her beard. He was there a million light years away so that she wouldn't have to have all that sex with all those aliens like Kirk did. About as likely as that he wouldn't agree to look after her dogs until she took that ring...

Did she wear her engagement ring for the first few seasons and how soon after she found out that he had remarried did she space it?

Seriously.

If that was his Grandmothers ring it was inconceivable of Kathryn not to have given that to Telek R'Mor to forward on to the man she thought of as minutely more than a friend.

Would they be forced to share one of the rooms they already had, or would they knock down some walls to make a living area which is equal to the Captain's + The CMO's accommodation stipend in square feet? Logically considering that the "same" ranked officers are most likely to hook up, meaning that there has to be at least one love connection between Captain, the CMO, The Chief Engineer, the XO and the Science Officer, that if it wasn't for the likelihood of a Romulan torpedo hitting them all with one lucky shot that the command staffs beds have to be as far away from one another as possible, otherwise it turns into lord of the flies with the Ensigns getting all tall and scary... The XO handles the crew, or at least hir staff does, which includes billet assignments, so it's the XO's job to play cupid and figure out who in the next year or two after being posted to their ship is going to be bumping fuzzies that any two or three people should have adjoining quarters that can be easily reformatted with a cutting torch into an Imperial Suite.

The First Officer is a Matchmaker.

If you find that there is an unbelievably attractive man moving in next door to you... That's not luck. That's Chakotay or Spock, Riker or T'Pol suggesting that you grab that piece of ass and hold on for the ride of your life. Ship board this has to change the very nature of wedding speeches... "I didn't want to be manipulated by Commander Riker, so I walked to the furtherest quarters away from my room, knocked on the door and instantly proposed out right to the person who answered. In all, things could have worked out worse."

Oh?

Which convenient neighbour was Seven supposed to fall in love with when Chakotay assigned her Quarters in season 6 or 7? ...Was that just the holodeck, but I can swear that she got a room assignment to compliment the cargo bay as her body was going through changes.

In an ideal world they both keep their own separate quarters and just use which ever one is preferred for hanging out drinking tea based on layout, or convenience to 10 fwd or whatever. Maybe if Beverly's quarters are closer to sickbay and she's really exhausted that week Picard stays there so she doesn't have to travel a few decks to his quarters. Or if one of them is on call because of a crisis they pick that way.

Everyone should do this. Marriages would last longer if people had their own living space and didn't have to bicker about who left too many lights on and whose turn it is to put out the rubbish. Unfortunately economics makes this a dumb choice for our century but since they did away with all that nonsense in the future there's absolutely no reason for people not to maintain their own living quarters.

In teacake's ideal world once children arrive the houses can be next door to each other and dramatic tubing perfect for children to run careening through can connect them. Like those hamster and gerbil cages.